Digital Elements - GE L90 Instruction Manual

5.7 CONTROL ELEMENTS
PATH: SETTINGS CONTROL ELEMENTS
DIGITAL ELEMENT 1
5
There are 48 identical digital elements available, numbered 1 to 48. A digital element can monitor any FlexLogic™ operand
and present a target message and/or enable events recording depending on the output operand state. The digital element
settings include a name which will be referenced in any target message, a blocking input from any selected FlexLogic™
operand, and a timer for pickup and reset delays for the output operand.
• DIGITAL ELEMENT 1 INPUT: Selects a FlexLogic™ operand to be monitored by the digital element.
• DIGITAL ELEMENT 1 PICKUP DELAY: Sets the time delay to pickup. If a pickup delay is not required, set to "0".
• DIGITAL ELEMENT 1 RESET DELAY: Sets the time delay to reset. If a reset delay is not required, set to "0".
• DIGITAL ELEMENT 1 PICKUP LED: This setting enables or disabled the digital element pickup LED. When set to
"Disabled", the operation of the pickup LED is blocked.
SETTING
DIGITAL ELEMENT 01
FUNCTION:
Disabled = 0
Enabled = 1
SETTING
DIGITAL ELEMENT 01
INPUT:
Off = 0
SETTING
DIGITAL ELEMENT 01
BLOCK:
Off = 0
CIRCUIT MONITORING APPLICATIONS:
Some versions of the digital input modules include an active voltage monitor circuit connected across form-A contacts. The
voltage monitor circuit limits the trickle current through the output circuit (see technical specifications for form-A).
5-240

DIGITAL ELEMENTS

DIGITAL ELEMENT
FUNCTION: Disabled
DIG ELEM
MESSAGE
Dig Element 1
DIG ELEM
MESSAGE
Off
DIG ELEM
MESSAGE
DELAY:
DIG ELEM
MESSAGE
DELAY:
DIG ELEMENT
MESSAGE
PICKUP LED: Enabled
DIG ELEM
MESSAGE
Off
DIGITAL ELEMENT
MESSAGE
TARGET: Self-reset
DIGITAL ELEMENT
MESSAGE
EVENTS: Disabled
SETTING
DIGITAL ELEMENT 01
NAME:
AND
RUN
Figure 5–128: DIGITAL ELEMENT SCHEME LOGIC
L90 Line Current Differential System
DIGITAL ELEMENT 1(48)
Range: Disabled, Enabled
1
Range: 16 alphanumeric characters
1 NAME:
Range: FlexLogic™ operand
1 INPUT:
Range: 0.000 to 999999.999 s in steps of 0.001
1 PICKUP
0.000 s
Range: 0.000 to 999999.999 s in steps of 0.001
1 RESET
0.000 s
Range: Disabled, Enabled
1
Range: FlexLogic™ operand
1 BLOCK:
Range: Self-reset, Latched, Disabled
1
Range: Disabled, Enabled
1
SETTINGS
DIGITAL ELEMENT 01
PICKUP DELAY:
DIGITAL ELEMENT 01
RESET DELAY:
t
PKP
INPUT = 1
t
RST
5 SETTINGS
5.7.10 DIGITAL ELEMENTS
FLEXLOGIC OPERANDS
DIG ELEM 01 DPO
DIG ELEM 01 PKP
DIG ELEM 01 OP
827042A1.VSD
GE Multilin